JPH10308701A - Radio communication apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a portable radio communication apparatus which improves the portability with a binding type notebook, also automatically selects an antenna that has stronger reception field intensity between an internal antenna and an exterior antenna and has a satisfactory communication sensitivity. SOLUTION: In a portable telephone set 1, when a binding guiding part is mounted on a binding type notebook and a portable telephone system body 2 is mounted on the binding guiding part, a switching control circuit 31 periodically switches a changeover switch 23 and a receiving system high frequency circuit 28 outputs an electric field intensity monitor signal RSSI that corresponds to electric field intensity of a receiving signal of an internal antenna 16 and an exterior antenna 18 to the circuit 31. The circuit 31 selects the antenna that has the larger level of the signal RSSI, connects it to the switch 32 and automatically acquires a satisfactory communication sensitivity even when the body 2 is mounted on the binding type notebook.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wireless communication device, and more particularly, to a portable wireless communication device capable of improving portability with a binding type notebook and always obtaining good communication performance.

[0002]

2. Description of the Related Art In recent years, personalization of portable telephone terminals has rapidly progressed, and in addition to analog cordless telephones, digital cordless telephones with improved call quality have appeared in telephones. In addition, a simplified next-generation cordless telephone system (Personal Handy-phone System: P
HS) has been standardized, and a digital car phone / cell phone system (Japan Digital Cordless phone: JDC) has been put into practical use.
It is increasing.

Conventionally, these wireless communication devices such as a portable telephone device are generally used alone as a wireless communication device, and are generally carried alone.

On the other hand, in recent years, binding type (system type) notebooks have appeared, and the binding type notebooks are widely used because of their high degree of freedom in page setting and the convenience that small items such as stationery and calculators can be bound together. It is supposed to be.

[0005] When a user of such a binding type notebook carries his / her portable telephone, he / she carries the notebook and telephone separately.

[0006]

However, in such a conventional wireless communication device, a user who uses both the binding notebook and the wireless communication device has to separate the binding notebook and the wireless communication device. There is a problem that their usability and portability are poor.

In view of the above, according to the first aspect of the present invention, a wireless communication apparatus main body having a built-in antenna is detachably attached to a binding notebook through a binding guide portion attached to a binding claw of the binding notebook. An external antenna is provided in the binding notebook, and the antenna with the larger electric field strength of the receiving carrier is selected as the antenna used for communication between the external antenna and the built-in antenna, and connected to the communication circuit of the wireless communication device body. By doing so, the portability of both the binding notebook and the wireless communication device main body is improved, and even when the wireless communication device body is bound to the binding notebook, appropriate communication sensitivity can be obtained automatically, and communication can be performed. To provide a wireless communication device with good performance and good usability. It is an object.

According to a second aspect of the present invention, a monitor signal output means for outputting an electric field intensity monitor signal corresponding to the electric field intensity of a received carrier is incorporated in a communication circuit of a radio communication apparatus main body.
The communication circuit is switched between the built-in antenna and the external antenna by the antenna switching means and connected, and based on the electric field strength monitor signal output from the monitor signal output means, the antenna having the larger electric field strength between the built-in antenna and the external antenna is used. Is selected as an antenna used for communication and connected to a communication circuit, thereby improving the portability of both the binding notebook and the wireless communication device main body with a simple circuit configuration, and connecting the wireless communication device main body to the binding notebook. It is another object of the present invention to provide a wireless communication device that can automatically obtain appropriate communication sensitivity even when the wireless communication device is bound, has good communication performance, and has good usability.

According to a third aspect of the present invention, when an external antenna of the binding type notebook is mounted on the binding guide section, the distance from the built-in antenna becomes greater than or equal to the carrier wavelength / 2 when the wireless communication apparatus main body is mounted on the binding guide section, thereby achieving space diversity. First monitor signal output means for providing an electric field intensity monitor signal corresponding to the electric field intensity of the received carrier received by the built-in antenna, and electric field intensity corresponding to the electric field intensity of the received carrier received by the external antenna And a second monitor signal output means for outputting a monitor signal. The built-in antenna is connected to the external antenna based on the electric field strength monitor signal output from the first monitor signal output means and the electric field strength monitor signal output from the second monitor signal output means. Select the antenna with the larger electric field strength from the attached antennas as the antenna used for communication, and By connecting to the road, it is possible to improve the portability of both the binding notebook and the wireless communication device main body, and to automatically obtain appropriate communication sensitivity when the wireless communication device main body is bound to the binding notebook. It is another object of the present invention to provide a wireless communication device that can obtain a good space diversity effect even in a fading environment, has better communication performance, and has good usability.

According to a fourth aspect of the present invention, an external antenna of the binding type notebook is provided, and when the wireless communication apparatus main body is mounted on the binding guide portion, the distance from the built-in antenna becomes carrier wavelength / 2 or more, thereby achieving space diversity. First monitor signal output means for providing an electric field intensity monitor signal corresponding to the electric field intensity of the received carrier received by the built-in antenna, and electric field intensity corresponding to the electric field intensity of the received carrier received by the external antenna And a second monitor signal output means for outputting a monitor signal. The built-in antenna is connected to the external antenna based on the electric field strength monitor signal output from the first monitor signal output means and the electric field strength monitor signal output from the second monitor signal output means. Select the antenna with the larger electric field strength from the attached antennas as the antenna used for communication, and The portability of both the binding notebook and the main body of the wireless communication device is improved by connecting to the reception system circuit by the antenna switching unit and selecting the selected antenna by the transmission system antenna switching unit and connecting to the transmission system circuit. In addition, when the wireless communication device body is bound to a binding notebook, appropriate communication sensitivity can be obtained automatically, and even in a fading environment, a good space diversity effect is obtained and a good data link is established. Can be secured,
It is an object of the present invention to provide a wireless communication device with even better communication performance and good usability.

[0011]

According to a first aspect of the present invention, there is provided a wireless communication apparatus comprising: a wireless communication apparatus body having a built-in antenna and a communication circuit; A mounting mechanism for removably mounting the wireless communication device main body to the binding guide portion, the mounting mechanism including: An external antenna that is provided on a notebook and is connected to the binding guide section via a predetermined power supply line, and is provided on the binding guide section and the wireless communication device main body, and the wireless communication device main body is provided by the mounting mechanism. Connecting the external antenna to the wireless communication device main body when attached to the binding guide portion An antenna switching means provided in the wireless communication device main body, for switching the communication circuit between the external antenna and the built-in antenna connected via the power supply line and the connection mechanism, and Monitor signal output means connected to the built-in antenna and the external antenna for outputting an electric field strength monitor signal corresponding to the electric field strength of the respective receiving carriers of the built-in antenna and the external antenna, and an output of the monitor signal output means Switching control means for selecting one of the built-in antenna and the external antenna having the larger electric field strength by the antenna switching means based on the electric field strength monitor signal to be connected to the communication circuit. Achieves the above object.

According to the above configuration, the wireless communication device main body having the built-in antenna is detachably mounted on the binding type notebook through the binding guide portion mounted on the binding claw of the binding type notebook, and the binding type notebook is attached to the binding type notebook. An external antenna is provided, and of the external antenna and the built-in antenna, the antenna with the larger electric field strength of the receiving carrier is selected as the antenna used for communication and connected to the communication circuit of the wireless communication device main body. The portable communication device can improve the portability of both the notebook and the wireless communication device body, and can also automatically obtain appropriate communication sensitivity even when the wireless communication device body is bound to the binding notebook. Have good communication performance and good usability. Kill.

In this case, for example, the monitor signal output means is built in the communication circuit, and switches between the built-in antenna and the external antenna via the antenna switching means. Connected, the switching control means switches the communication circuit to the built-in antenna and the external antenna by the antenna switching means as needed, based on the electric field strength monitor signal output by the monitor signal output means, The antenna having the larger electric field strength among the built-in antenna and the external antenna may be selected by the antenna switching means and connected to the communication circuit.

According to the above configuration, the monitor signal output means for outputting the electric field strength monitor signal corresponding to the electric field strength of the received carrier is built in the communication circuit of the wireless communication apparatus main body, and the communication circuit is built-in antenna by the antenna switching means. And the external antenna is switched and connected, and based on the electric field strength monitor signal output from the monitor signal output means, the antenna having the larger electric field strength is selected as the antenna used for communication from the built-in antenna and the external antenna. Because it is connected to the communication circuit, the portability of both the binding notebook and the wireless communication device main body can be improved with a simple circuit configuration, and it is suitable even when the wireless communication device body is bound to the binding notebook. Communication sensitivity can be obtained automatically, and the wireless communication device has good communication performance and With sex can be made favorable, it can be a wireless communication device and inexpensive.

According to a third aspect of the present invention, there is provided a wireless communication apparatus having a built-in antenna and a communication circuit, wherein a main body of the wireless communication apparatus is provided with a binding hole for inserting the binding claw into a binding type notebook having a cover and a binding claw. A wireless communication device detachably mounted via a binding guide portion having a mounting mechanism for detachably mounting the wireless communication device body to the binding guide portion,
A distance from the built-in antenna when the wireless communication device main body is mounted on the binding guide unit via the mounting mechanism while being connected to the binding guide unit via a predetermined feed line provided in the binding type notebook. Is provided on the binding guide portion and the wireless communication device main body, and is provided on the binding guide portion by the mounting mechanism. And a connection mechanism for connecting the external antenna to the wireless communication device main body, and the external antenna provided in the wireless communication device main body and connecting the communication circuit via the power supply line and the connection mechanism. Antenna switching means for switching and connecting to the built-in antenna; First monitor signal output means connected to the antenna and outputting an electric field intensity monitor signal corresponding to the electric field intensity of the received carrier; and second output means connected to the external antenna for outputting an electric field intensity monitor signal corresponding to the electric field intensity of the received carrier. 2 monitor signal output means, the electric field strength monitor signal output from the first monitor signal output means, and the electric field strength monitor signal output from the second monitor signal output means based on the electric field strength monitor signal output from the built-in antenna and the external antenna. The above object is achieved by providing switching control means for selecting an antenna having a larger electric field strength by the antenna switching means and connecting the antenna to the communication circuit.

According to the above configuration, when the external antenna of the binding type notebook is attached to the binding guide portion, the distance from the built-in antenna becomes equal to or more than the carrier wavelength / 2 when the radio communication device body is mounted on the binding guide, thereby forming space diversity. First monitor signal output means for providing an electric field intensity monitor signal corresponding to the electric field intensity of the received carrier received by the built-in antenna, and an electric field intensity monitor signal corresponding to the electric field intensity of the received carrier received by the external antenna And a second monitor signal output means for outputting an electric field strength monitor signal output from the first monitor signal output means and a second monitor signal output means.
Based on the electric field strength monitor signal output by the monitor signal output means, the antenna with the larger electric field strength is selected as the antenna used for communication from the built-in antenna and the external antenna, and connected to the communication circuit, so that the binding type notebook is used. And the portability of both the wireless communication device main body and the wireless communication device main body can be automatically obtained when the wireless communication device main body is bound to the binding notebook, and in a fading environment. , A good space diversity effect can be obtained, and the communication performance of the wireless communication device is much better, and
Good usability can be achieved.

According to a fourth aspect of the present invention, there is provided a wireless communication apparatus having a built-in antenna, a receiving system circuit, and a transmitting system circuit, wherein the main body of the wireless communication apparatus is provided with a binding type notebook having a cover and a binding claw. What is claimed is: 1. A wireless communication device detachably mounted via a binding guide portion having a binding hole to be inserted, wherein the mounting mechanism detachably mounts the wireless communication device main body to the binding guide portion; When the wireless communication device main body is mounted on the binding guide unit via the mounting mechanism, the distance from the built-in antenna is set to a carrier wavelength. / 2 or more external antennas forming space diversity,
A connection mechanism that is provided on the binding guide unit and the wireless communication device main body, and that connects the external antenna to the wireless communication device main body when the wireless communication device main body is mounted on the binding guide unit by the mounting mechanism; A receiving-system antenna switching unit provided in the wireless communication device main body and configured to switch and connect the receiving-system circuit to the external antenna and the built-in antenna connected via the feeder line and the connection mechanism; A transmission system switching means for switching and connecting a system circuit to the external antenna and the built-in antenna connected via the feeder line and the connection mechanism, and corresponding to the electric field strength of the receiving carrier connected to the built-in antenna. First monitor signal output means for outputting the detected electric field strength monitor signal, and receiving means connected to the external antenna. A second monitor signal output means for outputting a field intensity monitor signal corresponding to the field strength of Yaria,
The one of the built-in antenna and the external antenna having the larger electric field intensity based on the electric field intensity monitor signal output from the first monitor signal output unit and the electric field intensity monitor signal output from the second monitor signal output unit. And selecting the same antenna by the receiving antenna switching means to connect to the receiving system circuit, and selecting the same antenna as the antenna selectively connected to the transmitting system circuit by the receiving antenna switching means by the transmitting antenna switching means. The above object is attained by providing switching control means for making connection.

According to the above configuration, when the external antenna of the binding type notebook is mounted on the binding guide section, the distance from the built-in antenna becomes equal to or longer than the carrier wavelength / 2 so that space diversity is formed. First monitor signal output means for providing an electric field intensity monitor signal corresponding to the electric field intensity of the received carrier received by the built-in antenna, and an electric field intensity monitor signal corresponding to the electric field intensity of the received carrier received by the external antenna And a second monitor signal output means for outputting an electric field strength monitor signal output from the first monitor signal output means and a second monitor signal output means.
Based on the electric field strength monitor signal output from the monitor signal output means, the antenna having the larger electric field strength is selected as the antenna used for communication from the built-in antenna and the external antenna, and the receiving system circuit is switched to the receiving system circuit by the receiving system antenna switching means. At the same time as the connection, the selected antenna is selected by the transmission system antenna switching means and connected to the transmission system circuit.
It is possible to improve the portability of both the binding notebook and the wireless communication device body, and when the wireless communication device body is bound to the binding notebook,
Appropriate communication sensitivity can be obtained automatically, and even in a fading environment, a good space diversity effect can be obtained, a good data link can be secured, and the communication performance of the wireless communication device can be further improved. And
Good usability can be achieved.

[0019]

Preferred embodiments of the present invention will be described below in detail with reference to the accompanying drawings. It should be noted that the embodiments described below are preferred embodiments of the present invention, and therefore, various technically preferable limitations are added. However, the scope of the present invention is not limited to the following description. The embodiments are not limited to these embodiments unless otherwise specified.

FIGS. 1 to 7 show a first embodiment of a wireless communication apparatus according to the present invention. FIG. 1 shows a portable communication apparatus to which the first embodiment of the wireless communication apparatus according to the present invention is applied. Telephone device 1
FIG.

In FIG. 1, a portable telephone device (wireless communication device) 1 includes a portable telephone device body (wireless communication device body) 2.
And a binding guide 3 to which the mobile phone device main body 2 is detachably attached, and a binding notebook 4 to which the binding guide 3 is detachably attached. Like the binding type notebook, the notebook includes a binding claw 6 for binding the notebook paper 5 and the like. The binding guide portion 3 has a binding hole 7 into which the binding claw 6 is inserted. The binding guide portion 3 is detachably attached to the binding notebook 4 by inserting the binding claw 6 into the binding hole 7.

The binding type notebook 4 has a cover 4
An external antenna 8 is attached to the surface of a, and a power supply line 10 to which a power supply plug 9 is attached at the tip is connected to the external antenna 8. Power supply plug 9
Is removably inserted into a jack 11 formed on the upper part of the binding guide section 3.

The portable telephone device main body 2 includes various key input units 12 such as numeric keys and a display unit 1 in the same manner as an ordinary portable telephone.
3, a speaker 14, a microphone 15, a built-in antenna 16, and the like, and are used as a normal mobile phone by an internal battery (not shown). As shown in FIG. 2, the mobile phone device main body 2 has a surface on the binding guide 3 side,
A fitting groove 17 that is recessed in the vertical direction is formed, and a fitting projection 18 that fits with the fitting groove 17 is formed on a surface of the binding guide unit 3 on the side of the mobile phone device body 2. Therefore, the mobile phone device main body 2 can be detached from the binding guide unit 3 or attached to the binding guide unit 3 by sliding in the direction shown by the arrows in FIGS. 2 and 3 along the binding guide unit 3. . The fitting groove 17 and the fitting projection 18 function as a mounting mechanism for removably mounting the mobile phone main body 2 to the binding guide 3 as a whole.

As shown in FIG. 3, a stopper groove 19 is formed at an end of the surface of the main body 2 on the binding guide portion 3 side, and the binding guide portion 3 has a stopper groove 19 formed therein. Stopper 2 to be fitted
0 is attached. The stopper 20 is fitted in the stopper groove 19 by being moved in the direction of the mobile phone device main body 2 in a state where the mobile phone device main body 2 is completely mounted on the binding guide portion 3, and the diagram of the mobile phone device main body 2 is drawn. The movement in the detaching direction indicated by the arrows in FIGS. 2 and 3 is restricted to prevent the mobile phone device body 2 from accidentally falling off the binding guide 3.

As shown in FIG. 4, the binding guide 3 has a holding portion 3a formed by bending the lower end of the surface on the side of the portable telephone device body 2 toward the portable telephone device body 2. An external antenna coupling plug 21 is provided on the upper surface of the holding portion 3a. On the end surface of the lower end surface of the mobile phone main body 2 on the binding guide portion 3 side, a fitting concave portion 2a for fitting to the holding portion 3a of the binding guide portion 3 is formed, and the external antenna coupling plug of the fitting concave portion 2a is formed. An external antenna jack 22 into which the external antenna coupling plug 21 is inserted is provided on a surface facing the surface on which the external antenna 21 is provided. The external antenna coupling plug 21 is connected to the external antenna 8 via the power supply line 23, the jack 11, the power supply plug 9 and the power supply line 10. The feed line 23 is the antenna core 2
3a and an antenna ground (GND) line 23b.

The external antenna jack 22 is connected to the terminal 22
a, 22b and 22c. The terminal 22c is connected to a predetermined voltage source Vcc via a resistor R as shown in FIG. 5, and is connected to the switching control circuit 31 of FIG. 22b is grounded. The terminal 22a of the external antenna jack 22 is connected to the terminal a of the changeover switch 32 shown in FIG.

As shown in FIG. 5, the external antenna jack 22 is connected to the terminal 2 when the external antenna coupling plug 21 is not inserted into the external antenna jack 22.
2b and the terminal 22c are connected, the potential of the terminal 22c becomes low, and a low logic level detection signal is output to the switching control circuit 31. As shown in FIG. 6, when the external antenna coupling plug 21 is inserted into the external antenna jack 22, as shown in FIG.
Is urged in the direction of the terminal 22c, the terminal 22a connected to the terminal a of the changeover switch 32 shown in FIG. 7 is connected to the external antenna coupling plug 21, and the connection between the terminal 22b and the terminal 22c is released. The potential of the terminal 22c becomes high, and a detection signal of a high logic level is output to the switching control circuit 31. Therefore, the main body of the external antenna jack 22 and the terminal 22a are connected to the external antenna 8 together with the external antenna coupling plug 21 by the mobile phone main body 2.
The terminal 22b and the terminal 22c detect the insertion of the external antenna coupling plug 21 into the external antenna jack 22, that is, the attachment to the binding guide portion 3 of the mobile phone device body 2. And functions as a mounting detection unit (mounting detecting means) 25 that outputs a detection signal to the switching control circuit 31. The terminal 22c of the external antenna jack 22 has a contact portion with the terminal 22a made of an insulating material.

As shown in FIG. 7, the portable telephone device main body 2 includes a control circuit 26, a modem unit 27, a transmission system high-frequency circuit 2
8, reception system high frequency circuit 29, high frequency circuit input / output unit 30,
The high frequency circuit input / output unit 30 includes a switching control circuit 31, a switching switch 32, and the like.

The control circuit 26 controls each part of the portable telephone device main body 2 to perform an operation as the portable telephone device main body 2, and controls the key input unit 12 and the display unit 13.
The contents of the key input from the key input unit 12 are acquired, the processing corresponding to the key input is performed, and the contents of the key input and various information notified from the mobile phone device body 2 to the user of the mobile phone device body 2 are displayed. Display on the unit 13. Further, when the reception high-frequency circuit 29 detects an incoming signal received via the built-in antenna 16 or the external antenna 8, the control circuit 26 performs an incoming call process.

The high frequency circuit input / output section 30 connects the transmission system high frequency circuit 28 and the reception system high frequency circuit 29 to the built-in antenna 16 and the external antenna 8 via the terminal c of the changeover switch 32 by the antenna sharing device 33.

Receiving high-frequency circuit (monitor signal output means)
Reference numeral 29 converts the frequency of the received signal received by the built-in antenna 16 or the external antenna 8 by mixing the received signal with the local oscillation signal, and then outputs the received signal of the intermediate frequency IF to the modem unit 27. The receiving high-frequency circuit 29
The antenna is selectively switched and connected to the built-in antenna 16 and the external antenna 8 via the antenna duplexer 33 and the changeover switch 32, and the reception carrier of the received signal input from the connected built-in antenna 16 or the external antenna 8 is connected. An electric field intensity monitor signal RSSI corresponding to the electric field intensity is output to the switching control circuit 31.

The modem unit 27 performs demodulation processing of the intermediate frequency IF reception signal input from the reception high-frequency circuit 29, extracts a slot at a predetermined timing from the demodulated data (frame), and scrambles for eavesdropping prevention. Then, the configuration data is extracted from the format of the slot, the control data is sent to the control circuit 26, and the audio data is transferred to the speech codec. The speech codec of the modem unit 27 performs a digital audio data decompression process,
Specifically, ADPCM using adaptive prediction and adaptive quantization
The digital audio data is decoded according to the system and output to PCM (Pulse Code Modulation).
M converts the PCM audio signal sent from the speech codec into an analog audio signal, and causes the loudspeaker 14 to output the loudspeaker via an amplifier.

The modem unit 27 converts the analog audio signal input from the microphone 15 into a digital audio signal by PCM and outputs it to the speech codec as a PCM audio signal. The speech codec is a PCM input from the PCM. The audio signal is compressed by encoding it into ADPCM audio data, and then TDMA (Time Division).
Multiple Access). In TDMA, a slot is created by adding control data to voice data transferred from a speech codec, scrambled, and the like, and a slot is inserted into a frame at a predetermined timing to perform modulation processing. Output to the high frequency circuit 28.

The transmission high-frequency circuit 28 converts the frequency of the modulated wave input from the modem unit 27 based on the baseband transmission signal input from the control circuit 26 via the modem unit 27, and The high frequency circuit input / output unit 30 outputs the transmission signal input from the transmission system high frequency circuit 28 to the built-in antenna 16 or the external antenna 8 via the antenna sharing device 33, The signal is transmitted from the external antenna 8. The modem unit 27, the transmission system high-frequency circuit 28, the reception system high-frequency circuit 29, and the high-frequency circuit input / output unit 30 function as a communication circuit as a whole.

Switch (antenna switching means) 32
Has a terminal a, a terminal b, and a terminal c, and has a terminal c
Are connected to the antenna sharing device 33 of the high frequency circuit input / output unit 30. The terminal a of the changeover switch 32 is connected to the terminal 22 a of the external antenna jack 22, and the external antenna coupling plug 21 is connected to the external antenna jack 2.
2 is connected to the external antenna 8 via the terminal 22a of the external antenna jack 22 and the external antenna coupling plug 21. Terminal b of the changeover switch 32
Are connected to the built-in antenna 16.

The changeover switch 32 includes a changeover control circuit 31
The switching control signal CS is input from the
Switches the terminal c between the terminal a and the terminal b in response to the switching control signal CS,
6 is selectively connected to the antenna sharing device 33.

The switching control circuit (switching control means) 31 is connected to the external antenna jack 2
2 from terminal 22b of terminal 22b and terminal 22c of terminal 22c.
The presence / absence of attachment to the binding guide unit 3 of the mobile phone main body 2 is determined based on the low detection signal, and a switching control signal CS is output to the switching switch 32. That is, when a low detection signal is input from the attachment detection unit 25 of the external antenna jack 22, the switching control circuit 31 determines that the mobile phone device main body 2 is not attached to the binding guide unit 3 and performs switching. A switching control signal CS for connecting the terminal c of the switch 32 to the terminal b is output to the switching switch 32 to enable the communication by the built-in antenna 16. Also,
When a high detection signal is input from the attachment detection unit 25 of the external antenna jack 22, the switching control circuit 31 determines that the mobile phone device main body 2 has been attached to the binding guide unit 3, and A switch control signal CS for switching the terminal c to the terminal b and the terminal a at a predetermined interval to be connected is output to the switch 32. At this time, the electric field intensity of the received carrier received by the built-in antenna 16 and inputted from the receiving system high frequency circuit 29 Is compared with the field strength monitor signal RSSI corresponding to the field strength of the received carrier received by the external antenna 8, and the antenna with the higher field strength monitor signal RSSI is used. And the terminal c is connected to the terminal a or the terminal b to which the determined use antenna is connected. Switching the switching control signal CS switch 32
Output to

Although not shown, the portable telephone device main body 2 includes an internal battery, and supplies power to each section of the portable telephone device main body 2 from the internal battery. Also, when batteries are provided on the cover 4a of the binding notebook 4,
The mobile phone device main body 2 has a binding type notebook 4 in which the mobile phone device main body 2 is mounted on the binding guide portion 3.
When the battery is attached to the portable telephone, power is supplied from the battery of the binding notebook 4 to the main body 2 of the portable telephone, and a stable power supply is performed.

As shown in FIG. 1, the portable telephone device main body 2 performs a call using the headset 34 by inserting the headset 34 into a head jack 35 provided on the upper part of the portable telephone device main body 2. be able to.

Next, the operation of the present embodiment will be described. The mobile phone device 1 is configured such that the mobile phone device main body 2 is detachably mounted on the binding notebook 4 so that the binding notebook 4 is attached.
The portable telephone device main body 2
Is attached to the binding notebook 4, the built-in antenna 16 of the mobile phone device body 2 and the binding notebook 4 are attached.
This is characterized in that, of the external antennas 8 provided in the antenna, the antenna having the larger electric field strength of the receiving carrier is automatically switched to realize appropriate communication sensitivity.

That is, as shown in FIG. 1, the portable telephone device 1 inserts the binding claw 6 of the binding type notebook 4 into the binding hole 7 of the binding guide unit 3 and puts the binding guide unit 3 into the binding type notebook 4. When the power supply plug 9 is attached and inserted into the jack 11 of the binding guide 3, the external antenna 8 provided on the surface of the cover 4a of the binding notebook 4 is provided.
And an external antenna coupling plug 21 via a feeder line 23 inside the binding guide section 3.

In this state, the fitting groove 17 of the portable telephone device main body 2 is inserted into the fitting projection 18 of the binding guide portion 3, and the portable telephone device main body is inserted into the binding guide portion 3 as shown in FIGS. 2 and the stopper 20 of the binding guide unit 3 is
When the mobile phone device is slid to the side, the mobile phone device main body 2 can be securely attached to the binding guide portion 3, and as shown in FIG. 4, an external antenna coupling provided on the holding portion 3 a of the binding guide portion 3. Plug 21
Enters the external antenna jack 22 provided in the fitting concave portion 2a of the mobile phone device main body 2, and the external antenna 8 and the mobile phone device main body 2 are connected.

As shown in FIGS. 4 to 6, the terminal 22b and the terminal 22c of the external antenna jack 22 constitute a mounting detection unit 25, and the mounting detection unit 25 is connected to the external antenna coupling plug 21. Is an external antenna jack 22
5, the terminal 22b and the terminal 22c are connected, and a low detection signal is output to the switching control circuit 31, as shown in FIG. The switching control circuit 31 includes the mounting detection unit 2
When the low detection signal is input from the terminal 5, it is determined that the mobile phone device main body 2 is not attached to the binding guide 3, and the switching control signal CS for connecting the terminal c of the switch 32 to the terminal b is output. When the switching control signal CS is input, the switching switch 32 connects the terminal c to the terminal b and outputs the signal to the built-in antenna 1.
6 is connected to the antenna sharing device 33. Therefore, the external antenna coupling plug 21 is connected to the external antenna jack 2
When the portable telephone device body 2 is not inserted into the binding guide section 3 of the binding notebook 4, the antenna sharing device 33 is not inserted.
To the mobile phone device body 2
Can appropriately perform a call using the built-in antenna 16.

Then, the main body 2 of the portable telephone device is attached to the binding guide 3 of the binding type notebook 4, and
The external antenna coupling plug 21 of the binding guide 3 is connected to the external antenna jack 2 of the mobile phone device body 2.
2, the terminal 22 a of the external antenna jack 22 is connected to the terminal 22 a by the external antenna coupling plug 21.
The terminal 22a connected to the terminal a of the changeover switch 32 and the external antenna coupling plug 21
Is connected, the connection between the terminal 22b and the terminal 22c of the mounting detection unit 25 is released, and the mounting detection unit 25 outputs a high detection signal to the switching control circuit 31.

When a high detection signal is input from the mounting detection section 25, the switching control circuit 31 determines that the portable telephone device main body 2 has been mounted on the binding guide section 3, and changes the terminal c of the changeover switch 32 to A terminal b connected to the built-in antenna 16 and a terminal connected to the external antenna 8 via the external antenna jack 22, the external antenna coupling plug 21, the power supply line 23, the jack 11, the power supply plug 9 and the power supply line 10. and a switching control signal CS that switches and connects the terminal c and the terminal c to the terminal a and the terminal b at a predetermined period in response to the switching control signal CS. Switch and connect. Therefore, the built-in antenna 16 and the external antenna 8 are connected to the receiving high-frequency circuit 29 via the antenna sharing device 33 at a predetermined cycle.

The receiving high-frequency circuit 29 outputs to the switching control circuit 31 an electric field strength monitor signal RSSI corresponding to the electric field strength of the received carrier received via the built-in antenna 16 and the external antenna 8 which are connected by switching. Then, the switching control circuit 31 compares the electric field intensity monitor signal RSSI of the built-in antenna 16 with the electric field intensity monitor signal RSSI of the external antenna 8 and outputs the electric field intensity monitor signal RSSI.
The antenna having the higher SI level is determined as the antenna to be used. The switching control circuit 31 sends a switching control signal CS for connecting the terminal c to the terminal a or the terminal b of the switching switch 32 connected to the external antenna 8 or the built-in antenna 16 which is the determined used antenna. Output, and the changeover switch 32 connects the terminal c to the terminal a or the terminal b according to the switching control signal CS.

Therefore, the portable telephone device main body 2 is mounted on the binding notebook 4, the built-in antenna 16 is covered with the cover 4a of the binding notebook 4, etc., and the received electric field strength by the built-in antenna 16 and the air are radiated into the air. Even when the communication capacity decreases due to the decrease in antenna power,
When the mobile phone device body 2 is attached to the binding guide 3 of the binding notebook 4, the built-in antenna 16
And the external antenna 8 is automatically switched to the antenna having the larger electric field strength of the receiving carrier, thereby preventing a reduction in communication capability. That is,
When the mobile phone device body 2 is attached to the binding type notebook 4 and the binding type notebook 4 is closed, the mobile phone device body 2 does not make a call,
In many cases, the mobile phone device 2 is carried by the user, and even in such a standby state, the mobile phone device main body 2 performs location registration with the partner station (base station), so that the mobile phone device 2 always sends and receives data intermittently. When the reception is being performed and the mobile phone device body 2 is covered with the cover 4a of the binding notebook 4, the received electric field strength and the antenna power radiated into the air are reduced, and proper location registration can be performed. Communication capability is reduced. Further, the mobile phone device main body 2 is used while the mobile phone device main body 2 is mounted on the binding guide section 3. When the main body 2 of the mobile phone device is attached to the binding guide 3 of the binding notebook 4, the mobile phone device 1 switches to the antenna of the built-in antenna 16 or the external antenna 8, which has the larger electric field strength of the receiving carrier. Automatic switching, appropriate sensitivity compensation and output compensation can be performed without performing gain control or the like of the transmission system high-frequency circuit 28 and the reception system high-frequency circuit 29, thereby preventing a decrease in communication capability and improving communication. Sensitivity can be obtained.

In this embodiment, the presence / absence of attachment of the portable telephone device body 2 to the binding guide unit 3 is detected by the attachment detecting unit 25, and the portable telephone device body 2 is detected.
Is not attached to the binding guide 3, the built-in antenna 16 is used, and only when the mobile phone device body 2 is attached to the binding guide 3,
By comparing the electric field strengths of the built-in antenna 16 and the external antenna 8, the antenna having the larger electric field strength is determined as the antenna to be used. However, the mounting detection unit 25 does not need to be provided, By comparing the electric field strengths of the antenna 16 and the external antenna 8, the antenna having the larger electric field strength may be selected.

FIG. 8 is a diagram showing a second embodiment of the wireless communication apparatus of the present invention. This embodiment is provided with two receiving high-frequency circuits, one for a built-in antenna and one for an external antenna. The antenna to be used is determined based on the electric field strength monitor signal output from each high frequency circuit of the receiving system. In addition,
The present embodiment is applied to a mobile phone device similar to the mobile phone device of the first embodiment, and in the description of the present embodiment, the configuration similar to that of the first embodiment is applied. The same reference numerals are used for the portions, and the detailed description is omitted.

FIG. 8 is a circuit diagram of the portable telephone device main body 40 and the external antenna 8 of the portable telephone device 1 to which the second embodiment of the wireless communication device of the present invention is applied.

In FIG. 8, the portable telephone device main body 40 of the portable telephone device 1 has a built-in antenna 16, a control circuit 26, a modem unit 27, a transmission high-frequency circuit 28, and an antenna duplexer similar to those of the first embodiment. 33, a high-frequency circuit input / output unit 30 having two receiving-system high-frequency circuits 41 and 42, a changeover switch 43, and a changeover control circuit 4.
4 and so on. And the mobile phone device body 40
An external antenna jack 22 similar to that of the first embodiment is provided, and the external antenna jack 22 is provided with a mounting detection unit 25. This external antenna jack 22
, An external antenna coupling plug 21 provided in the binding guide section 3 is detachably inserted, and a terminal 22 a of the external antenna jack 22 is connected to the reception system high-frequency circuit 42. The attachment detection unit 25 detects the insertion of the external antenna coupling plug 21 into the external antenna jack 22, that is, the attachment to the binding guide unit 3 of the mobile phone device body 2, similarly to the first embodiment. Then, a high / low detection signal is output to the switching control circuit 44.

The transmission system high-frequency circuit 28 is the same as the transmission system high-frequency circuit 28 of the portable telephone device body 2 of the first embodiment, and the antenna duplexer 33 of the high-frequency circuit input / output unit 30 is used.
Is connected to the built-in antenna 16 via the.

The receiving high-frequency circuit (first monitor signal output means) 41 has the same function as the receiving high-frequency circuit 29 of the portable telephone device 2 of the first embodiment. Built-in antenna 1 via antenna duplexer 33
6 is connected. The reception high-frequency circuit 41 converts the reception signal received via the built-in antenna 16 into an intermediate frequency I
F-A is taken out and output to the terminal a of the changeover switch 43, and an electric field strength monitor signal RSSI corresponding to the electric field strength of the received carrier received via the built-in antenna 16
-A is output to the switching control circuit 44.

When the external antenna coupling plug 21 is inserted into the external antenna jack 22, the receiving system high-frequency circuit (second monitor signal output means) 42 is connected via the external antenna jack 22 and the external antenna coupling plug 21. Connected to the external antenna 8 and has the same function as that of the receiving system high-frequency circuit 29 of the first embodiment, and converts the received signal received via the external antenna 8 into the intermediate frequency IF-B.
And outputs it to the terminal b of the changeover switch 43, and also outputs an electric field intensity monitor signal RSSI-B corresponding to the electric field intensity of the received carrier received via the external antenna 8.
Is output to the switching control circuit 44.

The external antenna 8 according to the present embodiment, when the portable telephone device main body 2 is mounted on the binding guide 3 of the binding notebook 4, the portable telephone device main body 40.
Is provided at the position of the cover 4a of the binding notebook 4 which forms a space diversity with the distance from the built-in antenna 16 being equal to or longer than the carrier wavelength / 2.

Changeover switch (antenna switching means) 43
Has a terminal a, a terminal b, and a terminal c. The terminal a is connected to a receiving high-frequency circuit 41, and the terminal b is connected to a receiving high-frequency circuit 42. The terminal c of the changeover switch 43 is connected to the modem 27, and the changeover switch 43 selectively connects the terminal c to the terminal a and the terminal b according to the changeover control signal CS input from the changeover control circuit 44. Then, the reception high-frequency circuit 41 and the reception high-frequency circuit 42 are selectively connected to the modem unit 27.

The switching control circuit (switching control means) 44 includes:
The detection signal is input from the attachment detection unit 25, and the switching control circuit 44 receives the low detection signal from the attachment detection unit 25 indicating that the external antenna coupling plug 21 is not inserted into the external antenna jack 22. Output, a switching control signal CS for connecting the terminal c of the changeover switch 43 to the terminal a is output to the changeover switch 43, and the built-in antenna 16
Communication is possible. Further, the switching control circuit 44
When a high detection signal indicating that the external antenna coupling plug 21 is inserted into the external antenna jack 22 is input from the attachment detection unit 25, the electric field strength monitor signal RSSI input from the reception high-frequency circuit 41 -A and the level of the electric field strength monitor signal RSSI-B input from the receiving system high-frequency circuit 42 are constantly compared, and the terminal connected to the receiving system high-frequency circuit 41 or the receiving system high-frequency circuit 42 having the higher signal level is connected. A switch control signal CS for connecting the terminal c to the terminal a or the terminal b is output to the switch 43.

Next, the operation of the present embodiment will be described. The mobile phone device 1 according to the present embodiment includes a mobile phone device body 40.
Is removed from the binding guide section 3, a low detection signal is output from the mounting detection section 25 to the switching control circuit 44, and the switching control circuit 44
When the low detection signal is input from 5, the external antenna coupling plug 21 is not attached to the external antenna jack 22, that is, the mobile phone device main body 40 is attached to the binding guide 3 of the binding notebook 4. When it is determined that there is no switch, the switch 43 outputs a switch control signal CS for connecting the terminal c of the switch 43 to the terminal a. The changeover switch 43 outputs the changeover control signal CS
, The terminal c is connected to the terminal a, and communication using the receiving high-frequency circuit 41, that is, communication using the built-in antenna 16 is enabled.

When the portable telephone device main body 40 is mounted on the binding guide portion 3 and the external antenna coupling plug 21 is inserted into the external antenna jack 22, the mounting detection portion 25 switches the high detection signal. Circuit 4
4 is output. When a high detection signal is input from the attachment detection unit 25, the switching control circuit 44 attaches the external antenna coupling plug 21 to the external antenna jack 22, that is, the portable telephone device body 40 3 is determined to be attached to the receiver 3, and the electric field strength monitor signal RSSI
-A and the level of the electric field strength monitor signal RSSI-B input from the receiving high-frequency circuit 42 are constantly compared, and the terminal a connected to the receiving high-frequency circuit 41 having the higher signal level or the receiving high-frequency circuit 42 A switching control signal CS for connecting the connected terminal b to the terminal c is output to the changeover switch 43. The changeover switch 43 connects the terminal c to the terminal a or the terminal b in response to the switching control signal CS, and connects the receiving system high-frequency device connected to the built-in antenna 16 or the external antenna 8 having the larger received electric field strength. The circuit 41 or the receiving high-frequency circuit 42 is connected to the modem 2
Connect to 7.

When the portable telephone device main body 40 is mounted on the binding guide 3 of the binding notebook 4, the distance from the built-in antenna 16 becomes the carrier wavelength / 2 or more, and the external antenna 8 forms space diversity. The binding notebook 4 is provided at the position of the cover 4a.

Therefore, it is possible to always select one of the built-in antenna 16 and the external antenna 8 having the better reception sensitivity to perform communication, and the strength of the reception electric field is determined by the state of the medium in which the radio wave passes. A good diversity effect can be obtained even in a fading environment that changes over time under the influence, particularly in a Rayleigh fading environment in which the temporal probability distribution of the electric field strength is approximated by a Rayleigh distribution. As a result, the reception sensitivity of the mobile phone device main body 40 can be further improved, and the communication quality can be further improved.

FIG. 9 is a diagram showing a third embodiment of the wireless communication apparatus according to the present invention. This embodiment is provided with two receiving high-frequency circuits, one for a built-in antenna and one for an external antenna. The antenna to be used is determined based on the electric field strength monitor signal output from each of the receiving high-frequency circuits, and the transmitting high-frequency circuit is switched to the antenna used in the receiving high-frequency circuit and connected. Note that the present embodiment is applied to a mobile phone device similar to the mobile phone devices of the first and second embodiments, and in the description of the present embodiment, The same components as those in the first and second embodiments are denoted by the same reference numerals, and detailed description thereof will be omitted.

FIG. 9 is a circuit diagram of the portable telephone device main body 50 and the external antenna 8 of the portable telephone device 1 to which the third embodiment of the wireless communication device according to the present invention is applied.

In FIG. 9, the portable telephone device main body 50 of the portable telephone device 1 includes a built-in antenna 16, a control circuit 26, a modem unit 27, a transmitting high frequency circuit 28, a receiving high frequency circuit similar to the second embodiment. Circuits 41 and 42, a changeover switch 43, and the like.
1, a high-frequency circuit input / output unit 53 having a transmission antenna switching switch 54, a switching control circuit 55, and the like. The mobile phone main body 50 includes an external antenna jack 22 similar to that of the second embodiment, and the external antenna jack 22 includes a mounting detection unit 25.

An external antenna coupling plug 21 provided on the binding guide section 3 is detachably inserted into the external antenna jack 22, and the terminal 22 a of the external antenna jack 22 is connected to the high frequency circuit input / output section 53. It is connected to the antenna sharing device 52. Mounting detector 25
As in the first embodiment, the insertion of the external antenna coupling plug 21 into the external antenna jack 22
That is, it detects the attachment of the portable telephone device body 2 to the binding guide section 3 and outputs a high / low detection signal to the switching control circuit 44.

The transmission antenna changeover switch (transmission antenna changeover means) 54 includes terminals ta, tb and tc.
And the terminal tc is connected to the transmission system high-frequency circuit 28. The transmitting antenna changeover switch 54 has a terminal ta connected to the antenna duplexer 52 of the high frequency circuit input / output unit 53, and a terminal tb connected to the high frequency circuit input / output unit 53.
Is connected to the antenna duplexer 51 of the first embodiment. The transmission antenna changeover switch 54 sets the terminal tc to the terminal ta in response to the transmission antenna changeover signal AS input from the changeover control circuit 55.
And the terminal tb.

The antenna duplexer 51 of the high frequency circuit input / output unit 53 connects the built-in antenna 16 to the transmission high frequency circuit 28 via the transmission antenna changeover switch 54 and to the reception high frequency circuit 41, and Vessel 5
2 connects the external antenna 8 to the transmission system high-frequency circuit 28 via the transmission antenna changeover switch 54;
Connected to the receiving high-frequency circuit 42.

The transmission system high-frequency circuit 28 is the same as the transmission system high-frequency circuit 28 of the portable telephone device body 2 of the first embodiment, and includes an antenna duplexer 51 and an antenna duplexer 52 via a transmission antenna switch 54. , The antenna is alternatively connected to the built-in antenna 16 and the external antenna 8.

The receiving system high-frequency circuit (first monitor signal output means) 41 has the same function as the receiving system high-frequency circuit 41 of the portable telephone device 2 of the second embodiment. It is connected to the built-in antenna 16 via an antenna duplexer 53. The receiving high-frequency circuit 41
The intermediate frequency IF-A is extracted from the received signal received via the built-in antenna 16 and output to the terminal a of the changeover switch 43, and an electric field strength monitor corresponding to the electric field strength of the received carrier received via the built-in antenna 16 Signal RS
It outputs SI-A to the switching control circuit 55.

When the external antenna coupling plug 21 is inserted into the external antenna jack 22, the receiving system high-frequency circuit (second monitor signal output means) 42 uses the antenna duplexer 52 of the high-frequency circuit input / output unit 53, It is connected to the external antenna 8 via the antenna jack 22 and the external antenna coupling plug 21 and has the same function as the receiving high-frequency circuit 43 of the second embodiment. The intermediate frequency IF-B is extracted from the received signal and output to the terminal b of the changeover switch 43, and the electric field intensity monitor signal RSSI-B corresponding to the electric field intensity of the received carrier received via the external antenna 8 is switched. Output to the control circuit 55.

The external antenna 8 according to the present embodiment, when the portable telephone device main body 2 is mounted on the binding guide 3 of the binding notebook 4, is connected to the portable telephone device main body 50.
Is provided at the position of the cover 4a of the binding notebook 4 which forms a space diversity with the distance from the built-in antenna 16 being equal to or longer than the carrier wavelength / 2.

Changeover switch (receiving system antenna switching means)
43 is the same as in the second embodiment, and includes terminals a,
A terminal b is connected to the receiving system high-frequency circuit 41, a terminal b is connected to the receiving system high-frequency circuit 42, and a terminal c is connected to the modem 27. The changeover switch 43 selectively connects the terminal c to the terminal a and the terminal b in accordance with the changeover control signal CS input from the changeover control circuit 55, and
2 is selectively connected to the modem unit 27.

The switching control circuit (switching control means) 55 includes:
A high / low detection signal is input from the mounting detection unit 25,
When a low detection signal indicating that the external antenna coupling plug 21 is not inserted into the external antenna jack 22 is input from the mounting detection unit 25 to the switching control circuit 55, the terminal c of the switch 43 is connected to the terminal c. a, and outputs a switching control signal CS to the switch 43 and a transmission antenna switching signal AS for connecting the terminal tc of the transmitting antenna switching switch 54 to the terminal tb connected to the built-in antenna 16.
To enable reception processing and transmission processing by the built-in antenna 16. When a high detection signal indicating that the external antenna coupling plug 21 is inserted into the external antenna jack 22 is input from the attachment detection unit 25 to the switching control circuit 55, the switching control circuit 55 The input electric field intensity monitor signal RSSI-A and the electric field intensity monitor signal RS input from the receiving high-frequency circuit 42
The level of the SI-B is always compared, and the terminal a or the terminal b of the changeover switch 43 connected to the receiving high-frequency circuit 41 or the receiving high-frequency circuit 42 having the higher signal level.
A switching control signal CS for connecting the terminal c to the switching switch 43 is output to the built-in antenna 16 or the external antenna 8 to which the selected receiving high-frequency circuit 41 or the receiving high-frequency circuit 42 is connected. Transmission antenna changeover signal AS for connecting terminal tc to terminal ta or terminal tb of transmission antenna changeover switch 54
Is output to the transmission antenna changeover switch 54.

Next, the operation of the present embodiment will be described. The mobile phone device 1 according to the present embodiment includes a mobile phone device main body 50.
Is removed from the binding guide section 3, a low detection signal is output from the mounting detection section 25 to the switching control circuit 55, and the switching control circuit 55
When a low detection signal is input from the terminal 5, the external antenna coupling plug 21 is not mounted on the external antenna jack 22, that is, the mobile phone device main body 50 is mounted on the binding guide 3 of the binding notebook 4. It is determined that there is no switch, and the switch 43 outputs a switch control signal CS for connecting the terminal c of the switch 43 to the terminal a, and the transmission antenna switch 54 connected to the built-in antenna 16 is connected to the transmission antenna switch 54. A transmission antenna switching signal AS for connecting the terminal tc to the terminal tb is output to the transmission antenna switch 54. The switch 43 connects the terminal c to the terminal a in accordance with the switch control signal CS, connects the receiving high-frequency circuit 41 connected to the built-in antenna 16 to the modem unit 27, and Connects the terminal tc to the terminal b according to the transmission antenna switching signal AS, and connects the transmission system high-frequency circuit 28 to the built-in antenna 16. Therefore, while performing reception processing using the reception system high-frequency circuit 41 connected to the built-in antenna 16,
The transmission system high-frequency circuit 28 can be connected to the same built-in antenna 16 as the antenna that performs the reception processing, and the reception processing and the transmission processing can be performed using the same built-in antenna 16.

When the portable telephone device main body 50 is mounted on the binding guide section 3 and the external antenna coupling plug 21 is inserted into the external antenna jack 22, the mounting detection section 25 switches the high detection signal. Circuit 5
5 is output. When a high detection signal is input from the attachment detection unit 25, the switching control circuit 55 attaches the external antenna coupling plug 21 to the external antenna jack 22, that is, the mobile phone device body 50 3 is determined to be attached to the receiver 3, and the electric field strength monitor signal RSSI
-A and the level of the electric field strength monitor signal RSSI-B input from the receiving system high-frequency circuit 42 are constantly compared, and the changeover switch to which the receiving system high-frequency circuit 41 or the receiving system high-frequency circuit 42 having the higher signal level is connected is connected. A switch control signal CS for connecting the terminal a or the terminal b of the terminal 43 to the terminal c is output to the changeover switch 43, and the selected receiving system high-frequency circuit 41 or the built-in antenna 16 connected to the receiving system high-frequency circuit 42 or the outside. A transmission antenna changeover signal AS for connecting the terminal tc to the terminal ta or the terminal tb of the transmission antenna changeover switch connected to the same antenna as the mounting antenna 8 is output to the transmission antenna changeover switch. The changeover switch 43 connects the terminal c to the terminal a or the terminal b in response to the switching control signal CS, and connects the receiving system high-frequency device connected to the built-in antenna 16 or the external antenna 8 having the larger received electric field strength. The circuit 41 or the receiving high-frequency circuit 42 is connected to the modem 2
Connect to 7. Also, the transmission antenna changeover switch 54
Is a terminal tc according to the transmission antenna switching signal AS.
Is connected to the terminal ta or the terminal tb, and the same antenna as the built-in antenna 16 or the external antenna 8 selected as the reception antenna is connected to the transmission system high-frequency circuit 28.

When the portable telephone device body 50 is mounted on the binding guide section 3 of the binding notebook 4, the distance from the built-in antenna 16 becomes the carrier wavelength / 2 or more, and the external antenna 8 forms space diversity. The binding notebook 4 is provided at the position of the cover 4a.

Therefore, it is possible to always select the antenna having better reception sensitivity from the built-in antenna 16 and the external antenna 8 and perform the reception processing, and perform the transmission processing using the same antenna. , A fading environment in which the strength of the received electric field changes over time due to the influence of the state of the medium serving as a path of radio waves, especially a Rayleigh fading environment in which the temporal probability distribution of the electric field strength is approximated by a Rayleigh distribution In this case, a good reception diversity effect can be obtained, and a transmission diversity effect can be obtained. As a result, the reception sensitivity of the mobile phone device body 50 can be improved, and the transmission sensitivity can be further improved, and a good data link with the partner station can be secured to further improve the communication quality. Can be improved.

Although the invention made by the inventor has been specifically described based on the preferred embodiments, the invention is not limited to the above-described embodiment, and various modifications can be made without departing from the gist of the invention. It goes without saying that it is possible.

For example, in each of the above embodiments, the case where the present invention is applied to a portable telephone device has been described. However, it goes without saying that the wireless communication device is not limited to the portable telephone device.

[0080]

According to the wireless communication apparatus of the first aspect of the present invention, the main body of the wireless communication apparatus having the built-in antenna is attached to and detached from the binding type notebook via the binding guide portion attached to the binding claw of the binding type notebook. In addition to the external antenna provided in the binding type notebook, the antenna having the larger electric field strength of the receiving carrier is selected as the antenna used for communication between the external antenna and the built-in antenna. By connecting to the communication circuit of the main unit, the portability of both the binding notebook and the wireless communication device main unit can be improved, and even when the wireless communication device main unit is bound to the binding notebook, the appropriate communication sensitivity is automatically set. Wireless communication device with good communication performance and use Can be made is good.

According to the second aspect of the present invention, the monitor signal output means for outputting the electric field strength monitor signal corresponding to the electric field strength of the received carrier is built in the communication circuit of the main body of the radio communication apparatus. The circuit is switched between the built-in antenna and the external antenna by the antenna switching means and connected, and based on the electric field strength monitor signal output from the monitor signal output means, the antenna having the larger electric field strength is communicated between the built-in antenna and the external antenna. Since it is selected as an antenna to be used for communication and connected to a communication circuit, the portability of both the binding notebook and the wireless communication device body can be improved with a simple circuit configuration, and the wireless communication device body can be connected to the binding notebook. Even when binding to, appropriate communication sensitivity can be obtained automatically,
The wireless communication device can have good communication performance and good usability, and the wireless communication device can be inexpensive.

According to the third aspect of the present invention, the distance between the external antenna of the binding type notebook and the built-in antenna when the main body of the wireless communication device is mounted on the binding guide is at least carrier wavelength / 2. A first monitor signal output means for providing an electric field intensity monitor signal corresponding to the electric field intensity of the received carrier received by the built-in antenna, provided at a position where space diversity is formed;
Second monitor signal output means for outputting an electric field intensity monitor signal corresponding to the electric field intensity of the received carrier received by the external antenna, and the electric field intensity monitor signal output from the first monitor signal output means and the second monitor signal Based on the electric field strength monitor signal output by the output means, the antenna with the larger electric field strength is selected as the antenna used for communication from the built-in antenna and the external antenna, and connected to the communication circuit. It is possible to improve the portability of both the communication device main body, and when the wireless communication device main body is bound to the binding type notebook, it is possible to automatically obtain appropriate communication sensitivity, and also in a fading environment, Space diversity effect can be obtained, and the communication performance of the wireless communication device is further improved. And it can be utilized property is excellent.

According to the fourth aspect of the present invention, the distance between the external antenna of the binding type notebook and the built-in antenna when the main body of the wireless communication device is mounted on the binding guide is at least carrier wavelength / 2. A first monitor signal output means for providing an electric field intensity monitor signal corresponding to the electric field intensity of the received carrier received by the built-in antenna, provided at a position where space diversity is formed;
Second monitor signal output means for outputting an electric field intensity monitor signal corresponding to the electric field intensity of the received carrier received by the external antenna, and the electric field intensity monitor signal output from the first monitor signal output means and the second monitor signal Based on the electric field strength monitor signal output from the output means, the antenna having the larger electric field strength is selected as the antenna used for communication from the built-in antenna and the external antenna, and connected to the reception system circuit by the reception antenna switching means. In addition, since the selected antenna is selected by the transmitting antenna switching means and connected to the transmitting circuit, the portability of both the binding notebook and the wireless communication device main body can be improved, and the wireless communication device main body can be bound. When binding to a notebook, it is possible to automatically obtain the appropriate communication sensitivity. Even in a fading environment, a good space diversity effect can be obtained, a good data link can be secured, and the wireless communication device can have better communication performance and better usability. it can.

[Brief description of the drawings]

FIG. 1 is an overall configuration diagram of a mobile phone device to which a first embodiment of a wireless communication device according to the present invention is applied.

FIG. 2 is an enlarged perspective view of the upper part of the mobile phone device main body of FIG. 1 in a state where it is mounted on a binding guide unit.

FIG. 3 is an upper enlarged perspective view showing a state in which the main body of the mobile phone device of FIG. 1 is detached from a binding guide.

FIG. 4 is an enlarged perspective view of an external antenna coupling plug of the binding guide unit of FIG. 1 and an external antenna jack of the mobile phone device body;

FIG. 5 is an enlarged front view of an external antenna coupling plug and an external antenna jack in a state where the main body of the mobile phone device of FIG. 1 is detached from a binding guide.

FIG. 6 is an enlarged front view of an external antenna coupling plug and an external antenna jack in a state in which the main body of the mobile phone device of FIG. 1 is mounted on a binding guide portion.

FIG. 7 is a main part circuit configuration diagram of the mobile phone device main body and the external antenna of FIG. 1;

FIG. 8 is a main part circuit configuration diagram of a portable telephone device main body and an external antenna of a portable telephone device to which a second embodiment of the wireless communication device of the present invention is applied.

FIG. 9 is a main part circuit configuration diagram of a portable telephone device main body and an external antenna of a portable telephone device to which a third embodiment of the wireless communication device of the present invention is applied.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Mobile telephone apparatus 2 Mobile telephone apparatus main body 2a Fitting concave part 3 Binding guide part 3a Holding part 4 Binding type notebook 4a Cover 5 Notebook paper 6 Binding claw 7 Binding hole 8 External antenna 9 Power supply plug 10 Power supply line 11 Jack 12 Key input part Reference Signs List 13 display unit 14 speaker 15 microphone 16 built-in antenna 17 fitting groove 18 fitting projection 19 stopper groove 20 stopper 21 external antenna coupling plug 22 external antenna jack 22a to 22c terminal 23 power supply line 23a antenna core wire 23b antenna ground wire 24 connection mechanism 25 Attachment detection unit 26 Control circuit 27 Modem unit 28 Transmission system high-frequency circuit 29 Reception system high-frequency circuit 30 High-frequency circuit input / output unit 31 Switching control circuit 32 Switching switch ac terminal 33 Antenna common use Device 34 Headset 35 Head jack 40 Mobile phone device main body 41, 42 Reception system high frequency circuit 43 Changeover switch 44 Switching control circuit 50 Mobile phone device main body 51, 52 Antenna duplexer 53 High frequency circuit input / output unit 54 Transmission antenna changeover switch 55 Switching Control circuit ta to tc terminal

Claims (4)

[Claims] 1. A wireless communication apparatus main body having a built-in antenna and a communication circuit is attached to and detached from a binding type notebook having a cover and a binding claw via a binding guide having a binding hole into which the binding claw is inserted. A wireless communication device that is removably mounted, the mounting mechanism configured to removably mount the wireless communication device main body on the binding guide unit, and the binding guide unit via a predetermined power supply line provided in the binding notebook. An external antenna connected to the wireless communication device main body, the wireless communication device main body being mounted on the binding guide portion by the mounting mechanism. A connection mechanism for connecting to the device main body; and Antenna switching means for switching and connecting a path to the external antenna and the built-in antenna connected via the feeder line and the connection mechanism; and the built-in antenna connected to the built-in antenna and the external antenna. Monitor signal output means for outputting an electric field intensity monitor signal corresponding to the electric field intensity of each reception carrier of the external antenna, and the built-in antenna and the external antenna based on the electric field intensity monitor signal output by the monitor signal output means Switching control means for selecting an antenna having the larger electric field strength from the attached antennas by the antenna switching means and connecting the antenna to the communication circuit. 2. The monitor signal output means is built in the communication circuit and is connected to the built-in antenna and the external antenna by switching through the antenna switching means.
The switching control means switches the communication circuit between the built-in antenna and the external antenna appropriately by the antenna switching means to connect the built-in antenna and the external antenna, and based on the electric field strength monitor signal output from the monitor signal output means, 2. The wireless communication apparatus according to claim 1, wherein, of the external antenna and the external antenna, the antenna having the larger electric field strength is selected by the antenna switching means and connected to the communication circuit. 3. A wireless communication apparatus main body having a built-in antenna and a communication circuit is attached to and detached from a binding type notebook having a cover and a binding claw via a binding guide having a binding hole into which the binding claw is inserted. A wireless communication device that is removably mounted, the mounting mechanism configured to removably mount the wireless communication device main body on the binding guide unit, and the binding guide unit via a predetermined power supply line provided in the binding notebook. An external antenna that is connected to the wireless communication apparatus main body and is mounted on the binding guide section via the mounting mechanism, and the distance from the built-in antenna is a carrier wavelength / 2 or more to form space diversity. ,
A connection mechanism that is provided on the binding guide unit and the wireless communication device main body, and that connects the external antenna to the wireless communication device main body when the wireless communication device main body is mounted on the binding guide unit by the mounting mechanism; Antenna switching means provided in the wireless communication device main body, for switching the communication circuit between the external antenna and the built-in antenna connected via the feeder line and the connection mechanism, and connecting to the built-in antenna; First monitor signal output means for outputting an electric field intensity monitor signal corresponding to the electric field intensity of the received carrier, and second monitor signal connected to the external antenna for outputting an electric field intensity monitor signal corresponding to the electric field intensity of the received carrier Output means, an electric field strength monitor signal output from the first monitor signal output means, and the second monitor Switching control means for selecting, by the antenna switching means, the antenna having the larger electric field strength among the built-in antenna and the external antenna based on the electric field strength monitor signal output from the signal output means, and connecting to the communication circuit. A wireless communication device comprising: 4. A binding guide having a binding hole in which a binding claw is inserted is provided in a binding type notebook provided with a cover and a binding claw, wherein the main body of the wireless communication device having a built-in antenna, a reception system circuit, and a transmission system circuit is provided. A wireless communication device detachably mounted via a unit, a mounting mechanism for removably mounting the wireless communication device main body to the binding guide unit, and a predetermined power supply line provided in the binding notebook. And when the wireless communication device main body is mounted on the binding guide portion via the mounting mechanism, the distance from the built-in antenna becomes carrier wavelength / 2 or more to form space diversity. An external antenna to be connected, the binding guide section and the wireless communication apparatus main body. A connection mechanism for connecting the external antenna to the wireless communication device main body when the wireless communication device main body is mounted on the binding guide section by the mounting mechanism; A receiving antenna switching means for switching and connecting a circuit to the external antenna and the built-in antenna connected via the feed line and the connection mechanism; and a transmission system circuit via the feed line and the connection mechanism. Transmitting system antenna switching means for switching and connecting to the external antenna and the built-in antenna connected to each other, and a first monitor signal connected to the built-in antenna and outputting a field strength monitor signal corresponding to the field strength of the receiving carrier Output means for outputting an electric field strength monitor signal connected to the external antenna and corresponding to the electric field strength of the received carrier; A second monitor signal output unit, and the built-in antenna and the external device based on the electric field intensity monitor signal output from the first monitor signal output unit and the electric field intensity monitor signal output from the second monitor signal output unit. The antenna having the larger electric field strength among the antennas is selected by the receiving antenna switching means and connected to the receiving circuit, and the transmitting circuit is selected by the transmitting antenna switching means by the transmitting antenna switching means. A switching control unit for selecting and connecting the same antenna as the connected antenna.